Reference firmware for PixArt's PAT9125EL sensor and evaluation board. "Hello World" and "Library" contain the exact same files. Please import just one of the two into your mBed compiler as a new program and not as a library.
Welcome to the code repository for PixArt's PAT9125EL sensor and evaluation board.
For general information about this product, please visit this product's components page here:
https://os.mbed.com/components/PAT9125EL-Evaluation-Board/
For guides and tips on how to setup and evaluate the PAT9125EL sensor with the Nordic nRF52-DK microcontroller using this reference code, please visit this guide:
https://os.mbed.com/teams/PixArt/code/9125_referenceCode/wiki/Guide-for-nRF52-DK-Platform
For guides and tips on how to setup and evaluate the PAT9125EL sensor with any microcontroller using this reference code, please visit this guide:
https://os.mbed.com/teams/PixArt/code/9125_referenceCode/wiki/Guide-for-Any-Platform
main.cpp@5:577976dae20d, 2018-07-23 (annotated)
- Committer:
- PixArtVY
- Date:
- Mon Jul 23 22:15:42 2018 +0000
- Revision:
- 5:577976dae20d
- Parent:
- 4:8f7d8ff001f8
Comments.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
PixArtVY | 0:e9cce1154246 | 1 | // PAT9125EL: Miniature Optical Navigation Chip reference code. |
PixArtVY | 5:577976dae20d | 2 | // Version: 1.2 |
PixArtVY | 5:577976dae20d | 3 | // Latest Revision Date: 23 July 2018 |
PixArtVY | 0:e9cce1154246 | 4 | // By PixArt Imaging Inc. |
PixArtVY | 0:e9cce1154246 | 5 | // Primary Engineer: Vincent Yeh (PixArt USA) |
PixArtVY | 0:e9cce1154246 | 6 | |
PixArtVY | 3:979019410df2 | 7 | // Copyright [2018] [Vincent Yeh] |
PixArtVY | 3:979019410df2 | 8 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at: |
PixArtVY | 3:979019410df2 | 9 | // http://www.apache.org/licenses/LICENSE-2.0 |
PixArtVY | 3:979019410df2 | 10 | |
PixArtVY | 3:979019410df2 | 11 | |
PixArtVY | 0:e9cce1154246 | 12 | /* |
PixArtVY | 0:e9cce1154246 | 13 | //======================= |
PixArtVY | 0:e9cce1154246 | 14 | //Revision History |
PixArtVY | 0:e9cce1154246 | 15 | //======================= |
PixArtVY | 4:8f7d8ff001f8 | 16 | Version 1.2 -- 23 July 2018 |
PixArtVY | 4:8f7d8ff001f8 | 17 | -Changed SPI frequency to 2MHz. |
PixArtVY | 4:8f7d8ff001f8 | 18 | -Changed SPI timing for the readRegister function. |
PixArtVY | 4:8f7d8ff001f8 | 19 | |
PixArtVY | 3:979019410df2 | 20 | Version 1.1 -- 18 July 2018 |
PixArtVY | 4:8f7d8ff001f8 | 21 | -Added apache license notice. |
PixArtVY | 3:979019410df2 | 22 | |
PixArtVY | 0:e9cce1154246 | 23 | Version 1.0 -- 16 Feb. 2018 |
PixArtVY | 4:8f7d8ff001f8 | 24 | -First release. |
PixArtVY | 0:e9cce1154246 | 25 | */ |
PixArtVY | 0:e9cce1154246 | 26 | |
PixArtVY | 0:e9cce1154246 | 27 | #include "mbed.h" |
PixArtVY | 0:e9cce1154246 | 28 | #include "registerArrays.h" |
PixArtVY | 3:979019410df2 | 29 | #include "SPIcommFunctions.h" |
PixArtVY | 3:979019410df2 | 30 | //#include "I2CcommFunctions.h" |
PixArtVY | 0:e9cce1154246 | 31 | //Make sure you only have SPIcommFunctions or I2CcommFunctions enabled. You cannot include both headers. |
PixArtVY | 0:e9cce1154246 | 32 | |
PixArtVY | 0:e9cce1154246 | 33 | int main() |
PixArtVY | 0:e9cce1154246 | 34 | { |
PixArtVY | 0:e9cce1154246 | 35 | pc.baud(115200); // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value. |
PixArtVY | 0:e9cce1154246 | 36 | |
PixArtVY | 0:e9cce1154246 | 37 | #ifdef SPImode |
PixArtVY | 0:e9cce1154246 | 38 | spi.format(8,3); // Set SPI to 8 bits with inverted polarity and phase-shifted to second edge. |
PixArtVY | 4:8f7d8ff001f8 | 39 | spi.frequency(2000000); // Set frequency for SPI communication. |
PixArtVY | 0:e9cce1154246 | 40 | cs = 1; // Initialize chip select as inactive. |
PixArtVY | 0:e9cce1154246 | 41 | #endif |
PixArtVY | 0:e9cce1154246 | 42 | |
PixArtVY | 0:e9cce1154246 | 43 | #ifdef I2Cmode |
PixArtVY | 0:e9cce1154246 | 44 | i2c.frequency(400000); // Set frequency for I2C communication. |
PixArtVY | 0:e9cce1154246 | 45 | #endif |
PixArtVY | 0:e9cce1154246 | 46 | |
PixArtVY | 0:e9cce1154246 | 47 | pc.printf("Program START\n\r"); |
PixArtVY | 0:e9cce1154246 | 48 | |
PixArtVY | 0:e9cce1154246 | 49 | pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly. |
PixArtVY | 0:e9cce1154246 | 50 | if(readRegister(0x00) != 0x31) |
PixArtVY | 0:e9cce1154246 | 51 | { |
PixArtVY | 0:e9cce1154246 | 52 | pc.printf("Communication protocol error! Terminating program.\n\r"); |
PixArtVY | 0:e9cce1154246 | 53 | return 0; |
PixArtVY | 0:e9cce1154246 | 54 | } |
PixArtVY | 0:e9cce1154246 | 55 | |
PixArtVY | 0:e9cce1154246 | 56 | writeRegister(0x06, 0x97); //Software reset (i.e. set bit7 to 1) |
PixArtVY | 0:e9cce1154246 | 57 | wait_ms(1); //Delay 1 ms for chip reset timing. |
PixArtVY | 0:e9cce1154246 | 58 | writeRegister(0x06, 0x17); //Ensure software reset is done and chip is no longer in that state. |
PixArtVY | 0:e9cce1154246 | 59 | |
PixArtVY | 0:e9cce1154246 | 60 | load(initialize, initialize_size); //Load register settings from the "initialize" array |
PixArtVY | 0:e9cce1154246 | 61 | |
PixArtVY | 0:e9cce1154246 | 62 | |
PixArtVY | 0:e9cce1154246 | 63 | |
PixArtVY | 0:e9cce1154246 | 64 | if(readRegister(0x5E) == 0x04) //These unlisted registers are used for internal recommended settings. |
PixArtVY | 0:e9cce1154246 | 65 | { |
PixArtVY | 0:e9cce1154246 | 66 | writeRegister(0x5E, 0x08); |
PixArtVY | 0:e9cce1154246 | 67 | |
PixArtVY | 0:e9cce1154246 | 68 | if(readRegister(0x5D) == 0x10) |
PixArtVY | 0:e9cce1154246 | 69 | writeRegister(0x5D, 0x19); |
PixArtVY | 0:e9cce1154246 | 70 | } |
PixArtVY | 0:e9cce1154246 | 71 | |
PixArtVY | 2:bebddee7347e | 72 | writeRegister(0x09, 0x00); // enable write protect. |
PixArtVY | 0:e9cce1154246 | 73 | |
PixArtVY | 0:e9cce1154246 | 74 | while(1) |
PixArtVY | 0:e9cce1154246 | 75 | { |
PixArtVY | 0:e9cce1154246 | 76 | //pc.printf("MOTION bit: %2X\n\r", (readRegister(0x02) & 0x80) >> 7); //Prints motion bit for debugging. 1 = motion detected. 0 = no motion detected. |
PixArtVY | 0:e9cce1154246 | 77 | |
PixArtVY | 0:e9cce1154246 | 78 | if(readRegister(0x02) & 0x80) |
PixArtVY | 0:e9cce1154246 | 79 | { |
PixArtVY | 0:e9cce1154246 | 80 | grabData(); |
PixArtVY | 0:e9cce1154246 | 81 | printData(); |
PixArtVY | 0:e9cce1154246 | 82 | } |
PixArtVY | 0:e9cce1154246 | 83 | } |
PixArtVY | 0:e9cce1154246 | 84 | } |